Reversing mechanism



F. W. A. HENHICI.

REVERSINQ MECHANISM. APPLICATION mu) APR. 12. 1916.

Patented Sept. 16, 1919.

3 SHEETS-SHEET I.

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IIIIIIIIIIIIIII VIIIII'IIIIIIIII lnvenior W/ /Z Hen riai,

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F. W. A. HENRICI.

REVERSING MECHANISM.

APPLICATION FILED APR. 12. 1915.

Patented Sept. 16, 1919.

3 SHEETS-SHEET 2.

Inve ni'or Zi'ZZ/Z Henri/oi, 062%,,

F. W. A. HENPJCI.

REVERSING MECHANISM.

APPLICATION FILED APR. I2. I9l6.

1,3 1 6,093. Patented Sept. 16, 1919.

6, 3 3 SHEETS-SHEET 3.

Inventor: 1'71 Z2. Mi Henriai,

Th8 COLUMBIA PLANOGRAPI' cn., wAslllNnrON, n. c.

FRITZ w. A. nnnnrcr, or Bos'roN', MASSACHUSETTS.

REVERSING MECHANISM.

Specification of Letters Patent.

Patented Sept. 16, 1919.

Application filed April 12', 1916. Serial no. 90,762.

" To all whom it may concern:

Be it known that I, Fnrrz W. A. Hnnnror, a citizen of the United States,and a resident of Boston, county of Suffolk, and Commonwealth ofMassachusetts, have invented an Improvement in Reversing Mechanism, ofwhich the following description, in connec tion with the accompanyingdrawings, is a specification, like characters on the drawingsrepresenting like parts.

This invention relates to driving and reversing mechanismadapted for usein any case where it is desired to effect periodical reverse motion of amachine, and'aims to produce a novel, effective and inexpensiveconstruction for that purpose, to be operated by the driven member.

My invention will be more easily understood by reference to anillustrative embodiment thereof, and in which- Figure 1 is a verticalcross-section on the line 11, Fig. 2, looking toward the right;

Fig. 2, a vertical longitudinal section on the line 22, Fig. 1, lookingtoward the left;

Fig. 3, a diagrammatic illustration of the disposition of thecircuit-breaking members and wires leading thereto and therefrom,showing the directions of flow of electric currents when the members arein certain positions; i

Fig. 4, a similar illustration ofthe same parts when thecircuit-breaking members are in different positions, and

Fig. 5, a detailed plan of some of the contacts. I

Referring first to Figs. 1 and 2, my invention is shown as comprising asupporting and inclosing case A, of suitable material, as metal, andherein pear-shaped in vertical cross section, having front and rear endwalls 1, 1. The case is provided with a bearing 2 on its rear wall. Theopposite and front wall 1, of the case has an opening or h an dholetherein covered by a plate 3, which may be secured to the case A, bysuitable means as screws 4, 4, and this plate 8 has a bearing 5,opposite to. the bearing 2 referred to. The top, bottom and side wallsof the case A may consist of a metal plate 6 carried. about and restingon the flanges 7, 7, of the walls 1, 1,.and having its opposite endssuitably secured. i

A rib 8 of suitable dimensions extends from the front to the rear wallof the case, and furnishes convenient means of support for certain othermembers to be referred to.

Extending longitudinally through the case A, Fig. 2, is a threaded timerand circuit-breaker carrying shaft 9 carrying a shaft-supporting andtimer-reversing memi ber 10, as a sleeve, near one and herein the rearend thereof, and which is locked su1tably thereon. A collar 11 issecured conveniently upon the sleeve 10 abutting the bearing 2 of thecase A, and thus acts to prevent longitudinal movement of the shaft 9toward the right. The sleeve 10 is enlarged diametrically near one endproducing a shoulder 12.

Adjacent its opposite end, Fig. 2, the shaft 9 carries threaded theretoa second shaftsupporting and timer-reversing sleeve 13, the position ofthe sleeve longitudinally on the shaft 9 being determined and adjustedby a collar 14 on the outer end of the shaft. The outer end of thesleeve 13 is provided with a plurality of notches or slits 14 to receiveteeth 14 formed on the inner re duced edge of the collar 14, the reducededge servingas a support for the outer end of the sleeve 13. y

This collar 14 is retained on the shaft 9 by screws 14, 14, one of whichenters a keyway 14 while the other engages a flat face 14 of the shaft.This sleeve 13 has an adjusting hand wheel 15, secured thereto. By meansof the foregoing members obviously the sleeve 13 may be longitudinallyadjusted on the shaft 9 for a purpose which will be explained presently.The sleeves 10, 13, are each provided at their opposing faces withlongitudinally extended timer throwing posts 10*, 13

Threaded to the shaft 9 between the sleeves 1013, Fig. 2, is a travelingcombined timer and circuit-breaker actuating member, as a nut 16, havingat substantially opposite points on its two faces, longitudinallyextended reversing member engaging posts 16*, 16, adapted to engage theposts 10*, 13 on the timer reversing sleeves 10, 13. Rotatably mountedupon the sleeves 10, 13, Fig. 2, is a circuit-breaker or cam carriage B,which acts also as a current distributing member. This carriagecomprises an end disk 17, a similar opposite end disk 18havinganextended sleeve 19 thereon, the sleeve provided at its outer end witha hand-adjusting wheel 20. i 1

These two disks 17, 18, Fi 2, are securely locked togetherby suitabletie members, as bolts 21, 21, 21. The disk '17 is positioned 'riage B,the timer nut 16 being grooved at 23, 23, to receive them, andthe pins'are preferably inclosed by atubular member as a sheet of metal 21, toprevent oil from reaching the parts to be presently described.

This reversing mechanism is particularly adapted for use in connectionwith a motor as the driving medium, andfor eontrolling the operation ofthe motor bytheconstructiondescribed, I have conceived novelandeifectiveuneans, which I will now describe. i i

For closing and opening the several electriccircuits tothe reversingmotor to be referred to and from the generator or, other source ofpower, Ipre'fer to usc cams and they are herein three in number; two ofthem controlling the circuits to the motor, I have called operating cans .or circuit breakers 24, 25; and athird one controlling the reversingswitch circuit, I havetermed a eswitch cam 26 or; circuit breaker, the.latter being somewhat shorter than the others and all, arecarried bypins 21,21, 21, best shown in Fig. 2.

Inthis figure the cams are shown for the purpose of clearness, as if thwere rotated a'partial'turn to the right, Fig. 1, with the posts 16,16", in horizontal, position. a Within each. cam. and.ab,out eacholfthe'pi ns 21, 21, 21, is a suitable ,ijnsulating member 27, andwithin the cams and carried thereby is a tubular insulating member .28."To guard against too great movement of thecam carriage B, I provide itwith a frictionalhold ing device comprising aplatee29 resilientlysupported upon two springs 29- .positioned by posts 29", supported byany convenient part of the case A. At substantially the center of theplate 29 is a hump or,rib 29.

When the carriageB is moved,the ,post

25*, extended laterally from the disk 18, contacts with plate 29 whichyields sufficiently to permit the post 25 topass under the action of thetimer 16 but prevents it from rotating freely, if for any reason, it isinclined to do so. To prevent the carriage B from stopping midwaybetween the contacts 32 and 31 and adjacent contacts on each side of thecams and thus. stopping themaehine, if through any accident it was.inclined .to do so, I have provided the sharply inclined hump 29, whichcompels'the post 25 to stop on one side ofthehump and not directly onit. To properly insulate these cams- 24, 25, 26, fromeach'other, I haveprovided between them a plurality of disklike insulators 30.

For carrying the contacts of the several electric circuits, Fig. 2, tobe engaged by the cams 24, 25, 26, I utilize the rib 8, previouslyreferred to.

mounted contact plates 31,32, by means of Upon this rib are cally asreferring to-any source of electric current, as clearly it is immaterialwhat the, s ource of the current may be.

There is also, Fig. 2, a third contact plate ,33 carried bythe rib 8,secured by the bind ing, post 36 and having connected to it the line 37,leading Fig. 3,.to a reversing switch C. Each contact is properlyinsulated as by members 38, 38. This switch C may be of any approvedtype, and is conventionally illustrated Fig. 3, as comprising a magnet37 connected with the lines 37, 35, contacts 37, 37 interposed in theline 35, the magnet 37, adapted to be energized to throw the armature 37against the contacts 37", 37, and thus complete the circuit through theoperating circuit breaking cams 24, 25. 7 At one side-of the case A, andnear the lower part thereof, Fig. 1, is an upwardly extended rib 39 andthere are secured to it what, for convenience, I term constantcontactmembers 40, 41, 42, by bindingposts 43,44, 45, which also secureto said contacts, wires 46, 47, leading to the armature of the reversingmotor 4", Figs. 3, 4, and a wire 48 to the generator line 34.

The outer ends of these contacts 40, 41, 42, .see Fig. 1, are bent insuch a way as to form resilient cam engaging ends to be engaged by. the[cams 24, 25, 26, when either of the cams arein position to do so.

The contact plates 31,32, 33, are forked,

see Fig. 5, having each two depending camengaging contact arms 31, 31",32, 32, 33"- .33", the arms 31, 32 depending at the lefthandside, Fig.1, {of the cams 24, 25, 26, while the other and opposite arms 31*, 32*,:33, depend at the opposite or right-hand side of .the cams, oppositeand in suitable position to be engaged by the cams. These depending,oppositely disposed contacts I have termed, for convenience, alternatingcontacts. The arms 31*, 31 and 32, 32", however, do not depend oppositeeach other, respectively,but are crossed, see Figs. 4 and 5, in orderthat the current may be conducted to the motor in either direction.

For operating the shaft 9, Fig. 2, and the several parts alreadydescribed from the driven member, the shaft 9 may be equipped with anyconvenient means, and herein is provided with a dog 49, adapted to beengaged by a suitable member, as a dog 50 on the shaft 51 of the drivenmember. 7

; rotate shaft 9 of the reversing mec L 'rotate, being restrained Theoperation of my improved mechanism is as follows:

From what has been said already, it will be apparent that at all times,the cams 24, 25, 26, are in engagement with the contacts 40, 41, 42, andeither contacts 32", 31 33", or 31, 32 33, respectively. Assuming then,the several parts to be in position shown in Fig. 1, and referring to Fi3 for a diagrammatical disposition of t ese parts, and of theconnections, the machine to be driven will be assumed to be operativelyconnected to the motor 47 and rotated in such direction as will causeits shaft 51 and dog 59 to anism in the direction of arrow, Fig. 2, i.6., from left to right. Under these conditions, the

current willflow from the generator overline 34 to contact plate 31,contact 31", cam 25, contact 41, line 47, armature of motor 47, line 46,contact 40, cam 24, contact 32, plate 32, line 35, through the switch 37back to its source.

As the nut 16, threaded to shaft 9 cannot by the pins 22, 22, it will,by the rot.tion of shaft 9, be caused to travel longitudinally thereonfrom right to left, Fig. 2. As the machine continues to rotate in thisdirection, nut 16 travels toward the left, Fig. 2, until its post 16* isengaged by post 10 on the sleeve 10, rotating with the shaft 9, whichwill then rotate the nut 16 a partial turn from left to right.

The nut 16, by its engagement with pins 22, 22, on the cam carriage Bwill simultaneously rotate the cam carriage and its earns 24, 25, 26,from right to left, dotted line position Fig. 1, breaking theirengagement, Fig. 3, with contacts 32*, 31 33 and, while still inengagement with contacts 40, 41, 42, Fig. 4, throwing said cams intoengagement with the contacts 31 32 33.

When the timer 16 acts upon the cams 24, 25, 26, the cam 26 as stated,being shorter than the other two, is the first to break the switchcircuit at the contact 33 in the circuit line 34, line 48, plate 33, andline 37, to magnet 37. The result is that the magnet 37, beingdeenergized, the blade 37 moves under action of the spring 37 and breaksthe circuit through line35 from plate 31 to generator, and the cams24,25, after coasting a short time, come first into engagement withcontacts 31, 32 and subsequently the cam 26, on account of itsshortness, also comes into engagement with the contact 33*.

When the cam 26 engages contact 33*, Fig.

4, the circuit to the switch C is again established, and the currentflows thereto by line 48, contact 42, cam 26, contact '33, plate 33,line 37, enegizing magnet 37 causing blade 37 to close the circuitthrough the line 35, and causing current to flow through line 34, plate31, contact 31, earn 24, contact 40,

line 46, motor 47 in reverse direction to line 47 contact 41, cam 25,contact 32, plate 32, line 35, through the switch C, to the generator.

When the direction of the operation of the driven member has beenchanged, the nut 16 will of course travel in the opposite directionuntil its post 16 is engaged by the post 13 on sleeve 13, when it andthe cams will be again thrown, the current shifted to flow in thereverse direction as before and again reversing the direction ofrotation of the driven member.

When starting the machine, the circuit breaking cams 24, 25, 26, will bepositioned in contact with the contacts 40, 41, 42, and either contacts31*, 32, 33, or 31*, 33 32", according to the direction in which themachine was moving when it stopped.

Assume, for instance, that it stopped with the circuit breaking cams inposition shown in Fig. 4: the switch Qbeing open asper dotted lineposition Fig. 4. When the current is turned On the line 34 it will passthrough lines 48, circuit breaking cam 26, line 37 to magnet energizingthe same, closing switch C, causing the current to flow through line 34and line 35 actuating the motor 47 a and starting the driven member.

The foregoing provides a simple and reliable construct on for securingan equal number of rotations of the rotating memher in each direction.

The distance of travel of the nut 16 in each direction being necessarilythe same, inasmuch as it is engaged alternately by the posts 10 and 13,it insures regular periodical reversal of the direction of rotation ofthe driven member.

Whenever it is desired to change the length of time that the drivenmember shall be operated in one direction, either to increase ordecrease it, this may be done readily by simply loosening the screws 14in the collar 14 on the shaft 9, sliding thecollar on the shaft towithdraw the teeth 14 from the slots 14 in the sleeve end, turning thesleeve 13 on the shaft 9 by means of the wheel 15 to increase ordecrease the distance of the post 13 from the post 10*, and then againlocking the sleeve 13 in adjusted poslizion by means of collar 14 andthe screws While I haveherein described one embodiment of my inventionit is obvious that the same may be modified'in many details inconstruction without departing from the spirit of the invention andscope of the appended claims.

Claims:

1. Reversing mechanism comprising a plurality of operating circuitsleading to a reversing motor, a switch circuit, including a switchcontrolling the operating circuits,

means for connecting all the circuits with a' source of electricity, ashaft rotated from shaft,

actuator thereon, a circuit breakers carried by theshaft, a switchcircuit breaker also carried bythe shaft a 'l1'10t01,"-I11G2U1Sopenatiiig circuit breakers with I theniotor, mg and closing and: meanson the shaft for: openat stated times the'switch and operating circuitsto effect reversal of motion oft the driven inember. I

2. Reversing ii'iechanism comprising a a combined timer and circuitbreaker plurality of 1 operating for 1 connecting the means forconnecting all the circuit breakers Wltll a source of electric ty, 1 anda SWltcll connected with-the switch'circuit breaker -and controlling theoperating circuit breakthereon, ,the support, a plurality shaft, amotor,

ersand motor.

3'.- Reversing' mechanism porting member, a shaft thereon, a combinedmovable timer! and circuit breaker actuator aplurality of constantcontacts on ofoppositely disposed alternating-contacts also thereon; a

plurality of operating circuitbreakers and a switch circuit breakeroperated by the means for connectlng the operating circuit breakers withthe motor,

and means for connecting all'the circuit breakers with a source -.ofelectricity.

I Reversing mechanism comprising asupporting member, a shaft thereon, acombined movable timer and circuit breaker actuator thereon, a pluralityof constant contacts on said support, a plurality of oppositely disposedalternating contacts thereon, timer adjusting means adjacent the shaft;a plurality of operatiing circuit breakers and a I switch circuitbreaker on the shaft, a motor,

meeting all the circuit breakers with a;

thereof thereon, a

posed alternating contacts also thereon,

timer adjusting means adjustable relative to the shaft andcontrollingthe extent of movetimes i of reversal ment of the timer and aplurality of operating circuit breakers and a switch circuit'breaker onthe shaft, a motor, means for connecting the operating circuits with themotor, and means for connecting .all the circuit breakers' with a sourceoffelectricity.

\ 6. Reversing mechanism comprising a supporting member, a shaft abletimer and circuit breaker actuator plurality of constant contacts onsaid support, a plurality of oppositely disposed -alternating contactsalso thereon, timer adjustingmeans comprising a-sleere, adjustable onthe shaft, and locking means the motor,

- of electricity,

comprising a sup i-ality of ope :operatiiig breakers actuated bythereon, a -mov-.

supporting member, able timer-and circuit breaker actuatortheretherefor; a plurality of operating circuit breakers and a switchcircuit breaker on the shaft, ainotor, means for connecting theoperating circuit breakers with the motor, and means for connecting allthe circuit breakers with a source'of electricity. 7.;Reversii'igmechanism comprising a sup porting member, a Sllttfll'llllOlGOll, amovable timer and circuit breaker actuator thereon, aplurality. ofconstant contacts on said support, a pluralityof oppositelydisposedalternating contacts also thereon, timer adjusting'ineans adjacent theshaft; a motor, means for connecting a plurality of alternating contactswith the switch and source "and ii'icans for connecting a plurality ofconstant contacts with the niofor establishing operating circuits, apluatingcircuit breakers in the circuits, ,and a switch circuitbreakerin the switch circuit, all the circuit said timer. 8. Reversingmechanism comprising a supportingmember, a shaft thereon, a XUUY- vabletuner and circuit breaker thereon, a plurality a cl ua tor of constantcontacts on said support, a plurality of oppositely disposed alternatingcontacts also thereon:

timer adjusting means adjacent the shaft, means forconnectmg a pluralityof alternating contacts with the switch and the source ofelectricity,'and means for connecting a plurality of constant contactswith the motor establishing operating circuits; at circuit breaker andcurrent distributing carriage movably mounted and actuated by saidtimer, a plurality of operating circuit breakers in said operatingcircuits, and a switch circuit breaker in the switch circuit, and onsaid carriage.

9.-Reversing mechanism comprising a supporting member, a shaft thereon,a movable timer and circuit breaker actuator thereon, a plurality ofconstant contacts on said support, a plurality of oppositely disposedalternating contacts also thereon;

timeradjusting means adjaceiit the shaft,

means for connecting a-plurality of constant contacts with the-motor andmeans for con necting a plurality of alternating contacts with a sourceof electricity and the switch establishing operating circuits; a circuitbreaker and current distributing carriage 'rotatably mounted, aplurality of operating circuit breaking cams on said carriage and m theoperating c1rcu1ts, a switch circuit breaking cam on said carriage andin the switch circuit.

1O.-RVG1SlD mechanism com )risin a a shaft thereon, a inovon, aplurality of constant contacts on said support, a plurality ofoppositely disposed alternating contacts alsothereon; timer adustmgmeans ad acent-the shaft, means for connecting a plurality of constantcontacts wlth the motor and means for connecting a plurality ofalternating contacts with the switch establishing operating circuits; acircuit breaking carriage rotatably mounted on said shaft and within thefield of said contacts, a plurality of operating circuit breaking camsin said operating circuits, and a switch circuit breaking cam in saidswitch circuit, all on the carriage.

11. Reversing mechanism comprising a supporting member, a shaft thereon,a movable timer and circuit breaker actuator thereon, a plurality ofconstant contacts on said support, a plurality of oppositely disposedalternating contacts also thereon; timer adjusting means adjacent theshaft, means on the shaft for adjusting the timer controller relativethereto to regulate the time of reversal of the timer; means forconnecting a plurality of alternating contacts with the switch and meansfor connecting a plurality of constant contacts with the motorestablishing operating circuits; a circuit breaking carriage rotatablymounted on said shaft within the field of said contacts, a plurality ofoperating circuit breaking cams in said operating circuits and a switchcircuit breaking cam in the switch circuit, all on said carriage; saidoperating and switch circuit breaking cams normally in contact with saidconstant contacts and one set of alternating contacts, and adjustingmeans on the carriage for said circuit breakers.

12. Reversing mechanism comprising a casing, a cam carriage mounted torock therein, carrying operative circuit closing cams and a switchcircuit closing cam, each in an electrical circuit, a plurality ofalternating contacts, and a traveling timer for actuating the circuitclosing cams to alternately engage the alternating contacts.

13. Reversing mechanism comprising a casing, electrical operating andswitch circuits therein, constant contacts therein, alternate contactstherein, operating circuit breakers in the operating circuits, a switchcircuit breaker in the switch circuit controlling the. opening andclosing of the operating circuits, and adjusting means for determiningthe time for opening and closing of said circuits.

In testimony whereof, I have signed my name to this specification.

FRITZ W. A. HENRICI.

Copies of this patent may be obtained for five cents each, by addressingthe Gommissioner of Patents, Washington, D. 0.

